Which Under Sink Water Filter is the Perfect Fit for My Home?

An under sink water filter is an excellent choice for protecting your family’s health. The device fits conveniently below your kitchen sink and removes contaminants from your water. It then sends the water to a special faucet installed next to the regular faucet on your sink.

Under sink filters can easily support the daily drinking water needs of a family of four to six people. They are also less expensive than whole house water filters, which may not be necessary if you only need clean drinking water at one tap in your home. For most families, an under sink filter is an effective and affordable option for safe drinking water.

However, as you may have noticed, many different types of under sink water filters are available for purchase. Choosing between them likely seems intimidating because you don’t want to make the wrong choice for your home.

But there’s no need to get discouraged. We’re here to simplify things for you!

In this post, we’ll guide you through the process of finding the best under sink water filter for your home. By following these steps, you’ll know what’s polluting your water, how to get it out and the best way to get the trustworthy filtration your family needs.

Start by Finding Out What’s in Your Water

Before we get into the different types of under sink water filters, we need to examine your tap water. Our goal in doing so is to pinpoint which contaminants you need to remove. Once we know that, we can match you up with the right type of under sink filter for your situation.

Each city and town throughout the United States has its own assortment of toxins in its water, and some water supplies are more polluted than others. The amount of contamination can even vary from house to house, especially for houses with well water. Because of this, you need to get as much detailed information about the contents of your water as possible.

You can start by looking up recent water quality reports for your city. A great resource for this is the Environmental Working Group (EWG). The EWG is an independent nonprofit organization committed to raising awareness of environmental health concerns, including water pollution. The EWG’s online tap water database allows you to input your zip code and see which contaminants were recently detected that exceed health guidelines.

Your local water quality report will give you a good idea of what you need to filter out. However, the best way to know for sure which toxins you’re dealing with is to have your water tested.

At Angel Water, we perform EPA-certified water testing to get a detailed readout of a household’s water quality information. We quickly complete these tests in the home, help the homeowners understand the results and provide recommendations for the best water treatment solutions.

Find the Under Sink Water Filter for Your Contaminants

Your local water quality report and test results will show you what you need to remove from your water. The next step is to find the best-qualified tap water filter for the job.

As we mentioned above, there are many types of under sink water filters available. But we don’t want to overwhelm you with too many options at once. Instead, let’s start with the basics of how these water filters work.

There are two main categories of under sink filters: single-stage and multi-stage. Single-stage filters are the simplest type of tap water filter because they only use one filter material. Conversely, multi-stage filters put the water through two or more types of filter material to remove a wider variety of contaminants.

If your water only contains a small assortment of toxins, then a single-stage filter may be all you need. However, many households often need multi-stage filters to receive complete protection.

As you might imagine, multi-stage filters tend to be more expensive than their single-stage counterparts. Yet, this extra cost can be worth it to stay safe and healthy.

Activated Carbon vs. Reverse Osmosis Filters

Understanding the difference between single and multi-stage filters is key in choosing between the two most popular under sink filters available: activated carbon filters and reverse osmosis systems. Most of the tap water filters you come across will be one of these two types, and as we’ll see, one is much more effective than the other.

Activated carbon filters are single-stage systems that filter water by running it through a specially designed carbon medium. The carbon material absorbs many toxins, including organic compounds, chlorine and trihalomethanes, to remove them from the water. Activated carbon filters also improve the water’s taste and smell.

Reverse osmosis (RO) systems are multi-stage systems that provide the most thorough filtration of any under sink filter on the market. RO systems typically contain anywhere from three to five types of filters, including sediment and carbon filters.

The main filtration device in an RO system is a semipermeable membrane. The microscopic holes in this membrane are too small for most contaminants to make it through, but water molecules fit through just fine. As a result, NSF/ANSI 58 certified RO systems can remove all the following:

• Organic compounds
• Chlorine
• Trihalomethanes
• Bacteria
• Viruses
• Parasites
• Lead
• Hexavalent Chromium
• Dissolved solids
• Arsenic
• Iron
• And more!

As you can see, reverse osmosis systems are much more effective than activated carbon filters. The only drawbacks that come with NSF/ANSI 58 certified RO systems are they’re more expensive, take up more space under the sink and produce more wastewater than activated carbon filters. Still, if you want the strongest protection from contamination, a quality RO system is your best bet.

Other Types of Specialized Filters

You can also find single-stage or multi-stage filters with filtration media for specific pollutants. Here is an overview of the other specialized filters and the main toxins they can remove:

• Activated Alumina (AA) Filters remove arsenic, fluoride, chromium and selenium.
• Ion Exchange Systems remove charged contaminants, like arsenic, hexavalent chromium, calcium, and radium.
• Iron Filters take out iron, magnesium and hydrogen sulfide.
• KDF Filters eliminate chlorine, chromium, lead, mercury, bacteria, algae, fungi and more.
• Sediment Filters remove dirt, sediment and other large solid particles.
• UV Filters render harmful bacteria and other viruses inert. (However, these filters are not approved by some states’ departments of public health, such as Illinois.)

Depending on which contaminants you’re dealing with, your best fit may be a multi-stage system combining two or more of these types of filters.